Orlando Sanford International Airport (IATA: SFB, ICAO: KSFB, FAA LID: SFB) is in Sanford, Florida, United States, near Orlando. It was built as Naval Air Station Sanford, a Master Jet Base for carrier-based attack and reconnaissance aircraft, and was used by the U.S. Navy until 1969. The airport is owned and operated by the Sanford Airport Authority. It serves as an operating base for Allegiant Air.

Sanford is Orlando's secondary commercial airport, and is farther away from downtown Orlando and Walt Disney World than the primary airport, Orlando International Airport (MCO/KMCO). Because of the affiliation with Orlando, passenger traffic at Sanford was once dominated by European charter services.

Since 2008, however, a majority of its passenger traffic has been domestic; this is attributable to the entrance of Las Vegas–based Allegiant Air, for which Sanford is a focus city. Sanford was also a small focus city for the travel marketer Direct Air until the company's demise in 2012.